5.0.0-alpha.7

This is the seventh Express 5.0 alpha release, based off 4.16.4 and includes
changes from 5.0.0-alpha.6.

The major change with this alpha is the basic support for returned, rejected
Promises in the router.

• remove:
  • path-to-regexp dependency
• deps: [email protected]
  • Add DEBUG_HIDE_DATE environment variable
  • Change timer to per-namespace instead of global
  • Change non-TTY date format
  • Remove DEBUG_FD environment variable support
  • Support 256 namespace colors
• deps: [email protected]
  • Add basic support for returned, rejected Promises
  • Fix JSDoc for Router constructor
  • deps: [email protected]
  • deps: parseurl@~1.3.2
  • deps: [email protected]
  • deps: [email protected]